Year	% of GDP
1970	0.7278529543307638
1971	0.5294592013228739
1972	0.495656025685844
1973	0.7632941048120335
1974	1.0995426944551359
1975	0.5948134766956137
1976	0.610287530368324
1977	0.6665992749619915
1978	0.446368861538156
1979	0.7499960429521169
1980	1.1600865085842489
1981	0.7006031093311829
1982	0.5715630198022309
1983	0.6439147962691228
1984	0.3822729725929527
1985	0.4609883660232731
1986	0.3921016212455705
1987	0.4953586973334429
1988	0.8100297580551996
1989	0.7452491090761046
1990	0.5112146413080687
1991	0.4280287553563823
1992	0.5522361936758189
1993	0.35787040665536124
1994	0.3861489630214982
1995	0.3687137112775462
1996	0.3058951869602071
1997	0.25935532434020364
1998	0.2794384077261312
1999	0.2766960510339894
2000	0.2662156840941676
2001	0.22230655621973913
2002	0.2381661582347401
2003	0.2338374482001663
2004	0.3961485374215296
2005	0.6912622027729454
2006	1.1241297360650673
2007	1.5788424947989135
2008	1.540515967608079
2009	0.8542443459584678
2010	1.5814342250395832
2011	1.8041612301546308
2012	1.0124212741937895
2013	0.8690126370639275
2014	0.5971308948389734
2015	0.3579872038139146
2016	0.42017097028389905
2017	0.5279969032434231
2018	0.48876415336062873
2019	0.4191859098315193
2020	0.4603084060136697
2021	1.3583352029605333